Physical activity monitor and data collection unit

摘要

A physical activity data collection unit includes one or more infrared sensors configured to provide an output indicative of a pulse rate of a user of the physical activity data collection unit, at least one temperature sensor configured to provide an output indicative of at least a body temperature of the user, and at least one accelerometer configured to provide an output indicative of movements of the user. The physical activity data collection unit can also include a microcontroller configured to determine a pulse rate, a body temperature, and movement characteristics of the user of the data collection unit based on outputs from the one or more infrared sensors, the at least one temperature sensor, and the at least one accelerometer; determine a physical exertion level of the user based on one or more of the pulse rate, the body temperature, or the movement characteristics of the user; and store, in a memory, data indicative of the physical exertion level during a time period during which the physical exertion level exceeds a predetermined threshold.

主权项

1. A physical activity data collection unit, including:
two or more infrared sensors arranged on the data collection unit such that when the data collection unit is worn by a user, the two or more infrared sensors are positioned adjacent to a wrist of the user, the two or more infrared sensors being configured to provide an output indicative of a pulse rate of the user of the physical activity data collection unit; at least one temperature sensor configured to provide an output indicative of at least a body temperature of the user; at least one accelerometer configured to provide an output indicative of movements of the user; and a microcontroller configured to:
receive, from the two or more infrared sensors, two or more output signals, including one output signal received from each one of the two or more infrared sensors;determine a noise level value for each one of the two or more received output signals;determine a weighting factor for each one of the two or more received output signals based on the noise level value determined for each one of the two or more received output signals, wherein a first weighting factor determined for an output of one of the two or more infrared sensors having a first noise level is greater than a second weighting factor determined for an output of another of the two or more infrared sensors having a second noise level higher than the first noise level;obtain weighted outputs by assigning the determined weighting factors to corresponding ones of the two or more received output signals;determine a pulse rate, a body temperature, and movement characteristics of the user of the data collection unit based on the weighted outputs, the output provided by the at least one temperature sensor, and the output provided by the at least one accelerometer, respectively;determine a physical exertion level of the user based on one or more of the pulse rate, the body temperature, or the movement characteristics of the user; andstore, in a memory, data indicative of the physical exertion level during a time period during which the physical exertion level exceeds a predetermined threshold.